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Title:
MULTI-CIRCUIT CONTROLLER
Document Type and Number:
Japanese Patent JPH03143234
Kind Code:
A
Abstract:

PURPOSE: To interrupt fine leakage currents, and to obtain an interruption function equal to a mechanical contact by connecting a machine switch to a semiconductor switch and opening the machine switch in conformity with the switching of the semiconductor switch.

CONSTITUTION: A remote-control 10 has semiconductor switches 13-1 to 13-4 such as terminal bi-directional thyristors for switching load connected to the terminals 10-1 to 10-4 of a branch circuit, and a mechanical switch Ra is inserted between a semiconductor switch group and the terminal 14 of the power supply of load. The switch Ra is operated interlocked with a changeover switch 11, closed when a needle Rb is brought into contact with a contact Rb-1, and opened when the needle is brought into contact with a contact Rb-2. Accordingly, a long lifetime can be kept even when load is switched frequently, the leakage of currents is reduced, and energy can be conserved.


Inventors:
ARINOBU ICHIRO
Application Number:
JP1989000281264
Publication Date:
June 18, 1991
Filing Date:
October 27, 1989
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
H01H9/54; H02J13/00; (IPC1-7): H01H9/54; H02J13/00